body {
    text-align: center
}

#dc5 {
    margin: 0 auto;
    width: 1000px;
    height: 500px
}

#in1 {
    margin: 0 auto;
    border: 1px solid #149770;
    width: 500px;
    height: 28px
}

#bt1 {
    margin: 0 auto;
    border: 1px solid #149770;
    width: 100px;
    height: 30px
}